1 | #include "EXTERN.h" |
1 | #include "EXTERN.h" |
2 | #include "perl.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
3 | #include "XSUB.h" |
4 | |
4 | |
|
|
5 | #include <assert.h> |
5 | #include <string.h> |
6 | #include <string.h> |
6 | |
|
|
7 | /* this useful idiom is unfortunately missing... */ |
|
|
8 | static void |
|
|
9 | confess (const char *msg) |
|
|
10 | { |
|
|
11 | dSP; |
|
|
12 | |
|
|
13 | PUSHMARK(SP); |
|
|
14 | XPUSHs (sv_2mortal(newSVpv("only one coroutine can wait for an event",0))); |
|
|
15 | PUTBACK; |
|
|
16 | call_pv ("Carp::confess", G_VOID); |
|
|
17 | } |
|
|
18 | |
7 | |
19 | #include "EventAPI.h" |
8 | #include "EventAPI.h" |
20 | #include "../Coro/CoroAPI.h" |
9 | #include "../Coro/CoroAPI.h" |
21 | |
10 | |
22 | #define CD_CORO 0 |
11 | #define CD_WAIT 0 /* wait queue */ |
23 | #define CD_TYPE 1 |
12 | #define CD_TYPE 1 |
24 | #define CD_OK 2 |
13 | #define CD_OK 2 |
25 | #define CD_PRIO 3 /* hardcoded in Coro::Event */ |
|
|
26 | #define CD_HITS 4 /* hardcoded in Coro::Event */ |
14 | #define CD_HITS 3 /* hardcoded in Coro::Event */ |
27 | #define CD_GOT 5 /* hardcoded in Coro::Event, Coro::Handle */ |
15 | #define CD_GOT 4 /* hardcoded in Coro::Event, Coro::Handle */ |
28 | #define CD_MAX 5 |
16 | #define CD_MAX 4 |
29 | |
17 | |
30 | #define EV_CLASS "Coro::Event" |
18 | static HV *coro_event_event_stash; |
31 | |
|
|
32 | static pe_idle *scheduler; |
|
|
33 | static int do_schedule; |
|
|
34 | |
|
|
35 | #define NEED_SCHEDULE if (!do_schedule) \ |
|
|
36 | { \ |
|
|
37 | do_schedule = 1; \ |
|
|
38 | GEventAPI->now ((pe_watcher *)scheduler); \ |
|
|
39 | } |
|
|
40 | |
19 | |
41 | static void |
20 | static void |
42 | coro_std_cb(pe_event *pe) |
21 | coro_std_cb (pe_event *pe) |
43 | { |
22 | { |
44 | AV *priv = (AV *)pe->ext_data; |
23 | AV *priv = (AV *)pe->ext_data; |
45 | IV type = SvIV (*av_fetch (priv, CD_TYPE, 1)); |
24 | IV type = SvIV (AvARRAY (priv)[CD_TYPE]); |
46 | SV **cd_coro = &AvARRAY(priv)[CD_CORO]; |
25 | AV *cd_wait; |
|
|
26 | SV *coro; |
47 | |
27 | |
48 | sv_setiv (AvARRAY(priv)[CD_PRIO], pe->prio); |
|
|
49 | sv_setiv (AvARRAY(priv)[CD_HITS], pe->hits); |
28 | SvIV_set (AvARRAY (priv)[CD_HITS], pe->hits); |
|
|
29 | SvIV_set (AvARRAY (priv)[CD_GOT], type ? ((pe_ioevent *)pe)->got : 0); |
50 | |
30 | |
51 | if (type == 1) |
31 | AvARRAY (priv)[CD_OK] = &PL_sv_yes; |
52 | sv_setiv (AvARRAY(priv)[CD_GOT], ((pe_ioevent *)pe)->got); |
|
|
53 | |
32 | |
|
|
33 | cd_wait = (AV *)AvARRAY(priv)[CD_WAIT]; |
|
|
34 | |
|
|
35 | coro = av_shift (cd_wait); |
54 | if (*cd_coro != &PL_sv_undef) |
36 | if (coro != &PL_sv_undef) |
55 | { |
37 | { |
56 | CORO_READY (*cd_coro); |
38 | CORO_READY (coro); |
57 | SvREFCNT_dec (*cd_coro); |
39 | SvREFCNT_dec (coro); |
58 | *cd_coro = &PL_sv_undef; |
|
|
59 | NEED_SCHEDULE; |
|
|
60 | } |
40 | } |
61 | else |
41 | |
62 | { |
42 | if (av_len (cd_wait) < 0) |
63 | AvARRAY(priv)[CD_OK] = &PL_sv_yes; |
|
|
64 | GEventAPI->stop (pe->up, 0); |
43 | GEventAPI->stop (pe->up, 0); |
65 | } |
|
|
66 | } |
44 | } |
67 | |
45 | |
68 | static void |
46 | static void |
69 | scheduler_cb(pe_event *pe) |
47 | asynccheck_hook (void *data) |
70 | { |
48 | { |
|
|
49 | /* this loops as long as we have _other_ coros with the same or higher priority */ |
71 | while (CORO_NREADY) |
50 | while (CORO_NREADY && CORO_CEDE) |
72 | CORO_CEDE; |
51 | ; |
|
|
52 | } |
73 | |
53 | |
74 | do_schedule = 0; |
54 | static double |
|
|
55 | prepare_hook (void *data) |
|
|
56 | { |
|
|
57 | /* this yields once to another coro with any priority */ |
|
|
58 | if (CORO_NREADY) |
|
|
59 | { |
|
|
60 | CORO_CEDE_NOTSELF; |
|
|
61 | /* |
|
|
62 | * timers might have changed, and Event fails to notice this |
|
|
63 | * so we have to assume the worst. If Event didn't have that bug, |
|
|
64 | * we would only need to do this if CORO_NREADY is != 0 now. |
|
|
65 | */ |
|
|
66 | return 0.; |
|
|
67 | } |
|
|
68 | else |
|
|
69 | return 85197.73; /* this is as good as any value, but it factors badly with common values */ |
75 | } |
70 | } |
76 | |
71 | |
77 | MODULE = Coro::Event PACKAGE = Coro::Event |
72 | MODULE = Coro::Event PACKAGE = Coro::Event |
78 | |
73 | |
79 | PROTOTYPES: ENABLE |
74 | PROTOTYPES: ENABLE |
80 | |
75 | |
81 | BOOT: |
76 | BOOT: |
82 | { |
77 | { |
|
|
78 | coro_event_event_stash = gv_stashpv ("Coro::Event::Event", TRUE); |
|
|
79 | |
83 | I_EVENT_API("Coro::Event"); |
80 | I_EVENT_API ("Coro::Event"); |
84 | I_CORO_API ("Coro::Event"); |
81 | I_CORO_API ("Coro::Event"); |
85 | |
82 | |
86 | /* create a fake idle handler (we only ever call now) */ |
83 | GEventAPI->add_hook ("asynccheck", (void *)asynccheck_hook, 0); |
87 | scheduler = GEventAPI->new_idle (0, 0); |
84 | GEventAPI->add_hook ("prepare", (void *)prepare_hook, 0); |
88 | scheduler->base.callback = scheduler_cb; |
|
|
89 | scheduler->base.prio = PE_PRIO_NORMAL; /* StarvePrio */ |
|
|
90 | scheduler->min_interval = newSVnv (0); |
|
|
91 | scheduler->max_interval = newSVnv (0); |
|
|
92 | GEventAPI->stop ((pe_watcher *)scheduler, 0); |
|
|
93 | } |
85 | } |
94 | |
86 | |
95 | void |
87 | void |
96 | _install_std_cb(self,type) |
88 | _install_std_cb (SV *self, int type) |
97 | SV * self |
|
|
98 | int type |
|
|
99 | CODE: |
89 | CODE: |
|
|
90 | { |
100 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
91 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
101 | AV *priv = newAV (); |
|
|
102 | SV *rv = newRV_noinc ((SV *)priv); |
|
|
103 | |
92 | |
104 | av_extend (priv, CD_MAX); |
93 | if (w->callback) |
105 | av_store (priv, CD_CORO, &PL_sv_undef); |
94 | croak ("Coro::Event watchers must not have a callback (see Coro::Event), caught"); |
106 | av_store (priv, CD_TYPE, newSViv (type)); |
|
|
107 | av_store (priv, CD_OK , &PL_sv_no); |
|
|
108 | av_store (priv, CD_PRIO, newSViv (0)); |
|
|
109 | av_store (priv, CD_HITS, newSViv (0)); |
|
|
110 | av_store (priv, CD_GOT , type ? newSViv (0) : &PL_sv_undef); |
|
|
111 | SvREADONLY_on (priv); |
|
|
112 | |
95 | |
113 | w->callback = coro_std_cb; |
96 | { |
114 | w->ext_data = priv; |
97 | AV *priv = newAV (); |
115 | |
98 | |
116 | hv_store ((HV *)SvRV (self), |
99 | av_fill (priv, CD_MAX); |
117 | EV_CLASS, strlen (EV_CLASS), |
100 | AvARRAY (priv)[CD_WAIT] = (SV *)newAV (); /* AV in AV _should_ not be exposed to perl */ |
118 | rv, 0); |
101 | AvARRAY (priv)[CD_TYPE] = newSViv (type); |
|
|
102 | AvARRAY (priv)[CD_OK ] = &PL_sv_no; |
|
|
103 | AvARRAY (priv)[CD_HITS] = newSViv (0); |
|
|
104 | AvARRAY (priv)[CD_GOT ] = newSViv (0); |
|
|
105 | SvREADONLY_on (priv); |
|
|
106 | |
|
|
107 | w->callback = coro_std_cb; |
|
|
108 | w->ext_data = priv; |
|
|
109 | |
|
|
110 | /* make sure Event does not use PERL_MAGIC_uvar, which */ |
|
|
111 | /* we abuse for non-uvar purposes. */ |
|
|
112 | sv_magicext (SvRV (self), newRV_noinc ((SV *)priv), PERL_MAGIC_uvar, 0, 0, 0); |
|
|
113 | } |
|
|
114 | } |
119 | |
115 | |
120 | void |
116 | void |
121 | _next(self) |
117 | _next (SV *self) |
122 | SV * self |
|
|
123 | CODE: |
118 | CODE: |
|
|
119 | { |
124 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
120 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
125 | AV *priv = (AV *)w->ext_data; |
121 | AV *priv = (AV *)w->ext_data; |
|
|
122 | |
|
|
123 | if (AvARRAY (priv)[CD_OK] == &PL_sv_yes) |
|
|
124 | { |
|
|
125 | AvARRAY (priv)[CD_OK] = &PL_sv_no; |
|
|
126 | XSRETURN_NO; /* got an event */ |
|
|
127 | } |
|
|
128 | |
|
|
129 | av_push ((AV *)AvARRAY (priv)[CD_WAIT], SvREFCNT_inc (CORO_CURRENT)); |
126 | |
130 | |
127 | if (!w->running) |
131 | if (!w->running) |
128 | GEventAPI->start (w, 1); |
132 | GEventAPI->start (w, 1); |
129 | |
133 | |
130 | if (AvARRAY(priv)[CD_OK] == &PL_sv_yes) |
134 | XSRETURN_YES; /* schedule */ |
131 | { |
135 | } |
132 | AvARRAY(priv)[CD_OK] = &PL_sv_no; |
|
|
133 | XSRETURN_NO; |
|
|
134 | } |
|
|
135 | else |
|
|
136 | { |
|
|
137 | if (AvARRAY(priv)[CD_CORO] != &PL_sv_undef) |
|
|
138 | confess ("only one coroutine can wait for an event"); |
|
|
139 | |
136 | |
140 | AvARRAY(priv)[CD_CORO] = SvREFCNT_inc (CORO_CURRENT); |
137 | SV * |
|
|
138 | _event (SV *self) |
|
|
139 | CODE: |
|
|
140 | { |
|
|
141 | if (GIMME_V == G_VOID) |
141 | XSRETURN_YES; |
142 | XSRETURN_EMPTY; |
142 | } |
|
|
143 | |
143 | |
144 | MODULE = Coro::Event PACKAGE = Coro |
144 | { |
|
|
145 | pe_watcher *w = GEventAPI->sv_2watcher (self); |
|
|
146 | AV *priv = (AV *)w->ext_data; |
145 | |
147 | |
146 | # overwrite the ready function |
148 | RETVAL = newRV_inc ((SV *)priv); |
147 | void |
|
|
148 | ready(self) |
|
|
149 | SV * self |
|
|
150 | PROTOTYPE: $ |
|
|
151 | CODE: |
|
|
152 | NEED_SCHEDULE; |
|
|
153 | CORO_READY (self); |
|
|
154 | |
149 | |
|
|
150 | /* may need to bless it now */ |
|
|
151 | if (!SvOBJECT (priv)) |
|
|
152 | { |
|
|
153 | SvREADONLY_off ((SV *)priv); |
|
|
154 | sv_bless (RETVAL, coro_event_event_stash); |
|
|
155 | SvREADONLY_on ((SV *)priv); |
|
|
156 | } |
|
|
157 | } |
|
|
158 | } |
|
|
159 | OUTPUT: |
|
|
160 | RETVAL |
155 | |
161 | |